WELL · 42-013-33815 · DISTRICT 1
McCain L.W. -a- Tract 3 #7
Atascosa County · Somerset field · Producing · Vertical
Mccain L.W. -A- Tract 3 #7 (API 42-013-33815) is a well in Atascosa County operated by Calfas Oil LLC, completed June 19, 1987 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued May 8, 1987, permitted to 1,550 ft.
It was permitted by Emerson Oil Company and has since transferred to Calfas Oil LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Escondido, Olmos.
Its lease has reported 7.62K barrels of oil and 122 mcf of gas since January 1993, last reporting in July 2026. The lease carries 5 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Emerson Oil Company; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Dec 4, 2025 · (210) 244-3337
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Calfas Oil LLC |
| Production reports | Calfas Oil, LLCthrough Apr 2026 |
| Latest permit | Emerson Oil CompanyMay 8, 1987 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,550
- total depth, ft
- 1
- permits on file
- May 8, 1987
- last permit issued
- Jun 19, 1987
- completed
- 7.62K
- cumulative oil, bbl
- 122
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 19, 1987
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| McCain, L.W. -a- Tract 3 O-1-10783 | Somerset | Calfas Oil, LLC | 5 | 7.62K | 122 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 148 · prior 12 323(-54%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Emerson Oil CompanyJan 1993 → Mar 2004
- 2Simco OilSep 2005 → May 2010
- 3WSMAug 2010 → Sep 2019
- 4Petrosaurus, Inc.Nov 2019 → Feb 2021
- 5Blackjack Operating L. L. C.Nov 2022 → Oct 2023
- 6Calfas Oil, LLCNov 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 329812-99 | Drill | Emerson Oil Company | May 5, 1987 | May 8, 1987 | — | 1,550 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-10783 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,446 | 1,477 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 1,523 | 6.75 | 185 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 23, 1987 | Jul 9, 1987 | Yes |
| 00 | Jul 21, 1987 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-013-33815 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-013-33815 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/01333815, documented in the API reference.